| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 4 |
| Cornwall | 56 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 9 |
| Dorset | 0 |
| Durham | 0 |
| Essex | 8 |
| Gloucestershire | 0 |
| Hampshire | 0 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 0 |
| Lancashire | 3 |
| Leicestershire | 0 |
| Lincolnshire | 0 |
| London | 0 |
| Middlesex | 0 |
| Northumberland | 0 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 0 |
| Sussex | 3 |
| Staffordshire | 0 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 0 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 0 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| School | 3 |
| Housemaid Domestic | 2 |
| Apprentice Rock Drill | 1 |
| At School | 1 |
| Auxillary Post Man Civil Man | 1 |
| Butcher | 1 |
| Carpenter | 1 |
| Charwoman | 1 |
| Commercial Traveller | 1 |
| Corporation Mason | 1 |
| Dealer | 1 |
| Dress Maker | 1 |
| Egg Buyer | 1 |
| Engineer | 1 |
| Fruiterer | 1 |
| General Labourer | 1 |
| General Servant Domestic | 1 |
| Market Gardener | 1 |
| On Own Means | 1 |
| Outfitters Assistant Cloth | 1 |
| Pattern Maker | 1 |
| Post Boy | 1 |
| Refreshment House Keeper | 1 |
| Rope Maker | 1 |
| Servant Domestic | 1 |
| Name | Census Frequency |
|---|---|
| William Trevithick | 59 |
| Mary Trevithick | 49 |
| John Trevithick | 35 |
| Richard Trevithick | 35 |
| Elizabeth Trevithick | 32 |
| Thomas Trevithick | 32 |
| Jane Trevithick | 21 |
| James Trevithick | 18 |
| Eliza Trevithick | 17 |
| Henry Trevithick | 17 |
| George Trevithick | 16 |
| Annie Trevithick | 13 |
| Ann Trevithick | 12 |
| Charles Trevithick | 12 |
| Ellen Trevithick | 12 |
| Joseph Trevithick | 12 |
| Emily Trevithick | 7 |
| Bessie Trevithick | 6 |
| Frederick Trevithick | 6 |
| Hannah Trevithick | 6 |
| Harry Trevithick | 6 |
| Peggy Trevithick | 6 |
| Robert Trevithick | 6 |
| Sarah Trevithick | 6 |
| Susan Trevithick | 6 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Trevethick | 90% | 1,104 |
| 2 | Trevithick | 100% | 665 |
The surname Trevithick is the 2nd most popular variant of Trevethick.